noun. someone who emphasizes observable facts and excludes metaphysical speculation about origins or ultimate causes.
adjective. of or relating to positivism.
1. Noun, singular or mass The positivist theory expressed the belief that not all individuals are subject to rational thinking. 2. Adjective Sociologists, however, approach their studies with a more positivist scientific rigor and believe their research produces facts rather than the structured descriptions produced by more ethnographically oriented cultural anthropologists.